<div dir="ltr"><div dir="ltr">On Sat, Sep 26, 2020 at 7:05 AM Ben Zaiboc via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a>> wrote:<br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>Note I'm not talking about monetary cost. That varies, but the
energy cost (cost in energy, not monetary cost of energy) doesn't
(the minimum energy cost, anyway).</div></blockquote><div><br></div><div>And the energy cost is almost irrelevant, save that it informs the monetary cost. It's the monetary cost that will gateway getting people into space.</div><div><br></div><div>It is a given that the cost of launching things into space will have to come down a lot before many people move into space. This is being worked on, and seems likely to happen to a sufficient degree within a few decades. (Disclaimer: I'm one of the people working on it.)</div><div><br></div><div>There is a technological element necessary to this end (higher energy fuels, that enable fully reusable spacecraft), but there is a logistical element necessary too. Currently spaceflight is rare because it is expensive - but also, it is expensive because it is rare. Much of the cost is not actually in the rockets themselves, but in all the logistics around a rocket launch that could be amortized across several launches if only there were several launches to amortize across, but there are not.</div></div></div>